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DC Generators

DC Generators
A triplex wave winding will have parallel paths.

2
6
None of the listed here
4

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DC Generators
In dc generator, the constant losses is equal to

Mechanical losses
Stray losses plus shunt cu loss
Stray losses
None of the listed here

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DC Generators
The ideal commutation in a coil is not possible because each coil has

Inductance
Resistance
None of the listed here
Capacitance

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DC Generators
The armature core of a D.C. generator is usually made of

Cast-iron
Copper
Nonferrous material
Silicon steel

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DC Generators
The field winding of a dc shunt machine usually caries _______ of the rated current of the machine.

More than 20%
Less than 0.5 %
2% to 5%
15 to 25%

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DC Generators
Brushes of D.C. machines are made of

All of above
Soft copper
Carbon
Hard copper

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